[Elecraft] K2/100 w/KAT100 - Something you may find

[Tom Hammond NØSS]

Good Morning Folks:

I trust everyone had a good Thanksgiving...

This morning, I made a change to my K2 (actually REMOVED a mod!). When I 
returned it back to service, I already DC applied to the KAT100, so I just 
plugged power into the K2 and then the  heavy DC leads to into KPA100, and 
went about my merry way.

Jumped down to 10M (from 20M) and hit the TUNE button... NOTHING 
HAPPENED...! KAT100 indicated a 1.5:1 SWR which should have been ample to 
initiate a re-tune when TUNE was pressed.

Went into MENU | ATU and found the setting was displaying "ATU --".

Went into EDIT mode and cranked on the knob to set the ATU setting to 
"AUTO"... no go... the only response I got back was "PA ANT 1".

Checked to ensure that the PA WAS being recognized... and it was. But still 
no ATU action.

So I did what no self-respecting user would do... I went to the KAT100 
MANUAL! And there, in the TROUBLESHOOTING section, was my answer...

By powering up the K2 (and possibly the KPA100) while the KAT100 WAS 
already powered, but before the KPA100 had full power to it, I apparently 
put the K2 into a situation where it didn't want to recognize that the 
KAT100 was present. It's one of those 'timing' thangs (sic)...!

I stumbled back into the shack, and turned the K2 off and back on... VOILA! 
Everything began working AS ANTICIPATED this time.

Moral of the story... follow Elecraft's suggestions for the proper order of 
powering up your rig once you have a bunch of options installed. That 
being, power to the KAT100 first, then power to the KPA100 (if it's gonna 
be used) and THEN turn on the K2.

This should always work correctly. Though some other scenarios will 
generally work as well, there's always that off-chance that the power-up 
timing issue might raise it's ugly head.

73,

Tom  N0SS